The RÃÂo Paz () is a river in southern Guatemala. Its sources are located in the Quezalapa mountains in the north of Jutiapa. From there it flows in a south-westerly direction and marks the border with El Salvador for most of its course before reaching the Pacific Ocean at .
The Paz River is long, and its basin covers a territory of in Guatemala.
It flows through the Ahuachapán Department and into the Laguna el Espino.